The three Astronauts Bruce McCandless II, Dale Gardner and Joseph Allen are famous in history because they used to walk outside the space without the safety lanyard due to special tasks.
Astronauts Bruce McCandless II is famous for the most frightening space photo taken from the Challenger shuttle on February 7, 1984. On that day, he and his colleague Bob Stewart wore a managed mobile device (Manned MMU) – a backpack pushed by nitrogen, allowing astronauts to move and perform operations outside the spacecraft (EVA) without wires connected to the ship. They left the train to make a space walk without a seat belt when the Challenger ship moved at a speed of nearly 28,900 km/h.
McCandless became the first person to make a walk outside the space without any physical connection with the spacecraft. He drifted up to 98 m from the shuttle, only based on MMU to move and maintain life.
Astronauts Bruce McCandless II are far away from the 98 -meter shuttle on a space walk. Image: NASA
Another NASA space walk is equally scary. In 1984, astronauts Dale Gardner and Joseph Allen Bay had no wires to recover two communication satellites that were wrongly tragic due to missile malfunctions.
Because the booster could not put satellites in the right trajectory, NASA planned them to wear space clothes and wear MMU to recover Westar 6 and Palapa B2 satellite to bring back to Earth, while Anna Fisher operated the remote operation system (RMS). Both Gardner and Allen took turns collecting satellites without laces, in which Gardner flew with MMU to get Westar back.
After driving the Discovery train from Palapa within 11 m, Allen and Gardner out of the wind latch to start a space walk. Allen wears MMU placed in the cavity wall, attached to the arm of its attack and flew towards Palapa. When he approached, Mr. India needed to enter the spot starting engine belt and use MMU’s direction control system to prevent Palapa from rotating.
Astronaut Dale A. Gardner on a walking space. Image: NASA
After that, Fisher controlled RMS to catch the keychain placed on the lever and between Allen and satellites. Next, she pulled Allen and satellites towards the cargo compartment where Gardner waited to remove its equation and install the linked structure. However, Gardner could not attach a connection structure to the satellite due to the external problem on the satellite. Using the backup plan, Allen removes it with, so that it is attached to the satellite and RMS, and then pulls MMU into the cargo compartment. After the Allen held the satellite through its antenna, Gardner attaches the adjustment set to the bottom of the satellite to fix it in the cargo compartment.
The task of success with satellites is collected within 6 hours. The second satellite collection process made by Gardner is smooth and completed in 5 hours 42 minutes. Both satellites are taken to Earth.
Normally, some astronauts on the space station can carry out “operations outside the vehicle”, also known as walking in the space that lasts from 5 to 6 hours for maintenance outside the station, performing spatial experiments or testing new equipment. At that time they will wear specialized space for pure oxygen breathing for a few hours. They have to connect to a seat belt on the spacecraft. These connection wires are made of special materials that can withstand the effects of microelectric meteorites with high speed and energy. They keep the astronaut floating into the space.